INFO: task syz.0.17:4457 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17 state:D stack:0 pid:4457 ppid:4435 flags:0x00000009
Call trace:
__switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0xdd0/0x1b0c kernel/sched/core.c:6562
schedule+0xc4/0x170 kernel/sched/core.c:6638
schedule_timeout+0xc8/0x2f4 kernel/time/timer.c:2144
do_wait_for_common+0x288/0x3f8 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x44/0x5c kernel/sched/completion.c:138
kthread_stop+0x1d0/0x7f8 kernel/kthread.c:711
f2fs_stop_gc_thread+0x70/0xc0 fs/f2fs/gc.c:209
f2fs_ioc_shutdown fs/f2fs/file.c:2361 [inline]
__f2fs_ioctl+0x78b4/0xb194 fs/f2fs/file.c:4373
f2fs_ioctl+0x130/0x1a0 fs/f2fs/file.c:4454
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Showing all locks held in the system:
2 locks held by kworker/u4:0/9:
1 lock held by rcu_tasks_kthre/12:
#0: ffff8000153f7c30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffff8000153f8450 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffff8000153f72c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
1 lock held by klogd/3923:
2 locks held by getty/4077:
#0: ffff0000d89b8098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff8000208cb2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xfa0 drivers/tty/n_tty.c:2198
1 lock held by syz.0.17/4457:
#0: ffff0000d1ee6460 (sb_writers#12){++++}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:446
1 lock held by syz.1.31/4540:
#0: ffff0000d06e6460 (sb_writers#12){++++}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:446
1 lock held by syz.2.54/4669:
#0: ffff0000da160460 (sb_writers#12){++++}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:446
1 lock held by syz.3.72/4779:
#0: ffff0000f113e460 (sb_writers#12){++++}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:446
1 lock held by syz.7.121/5127:
#0: ffff000100920460 (sb_writers#12){++++}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:446
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